<template>
  <a-layout>
    <a-layout-content
        :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <p>
        <a-form layout="inline" :model="param">
          <a-form-item>
            <a-input v-model:value="param.name" placeholder="请输入名称">
            </a-input>
          </a-form-item>
          <a-form-item>
            <a-button
                type="primary"
                @click="handleQuery({page:1,size:pagination.pageSize})"
            >
              查询
            </a-button>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add()">
              新增
            </a-button>
          </a-form-item>
        </a-form>
      </p>
      <a-table
          :columns="columns"
          :row-key="record => record.id"
          :data-source="ebooks"
          :pagination="pagination"
          :loading="loading"
          @change="handleTableChange"
      >
        <template #cover="{ text: cover }">
          <img v-if="cover" :src="cover" alt="avatar" />
        </template>
        <template v-slot:category="{text, record}">
          <span>{{getCategoryName(record.category1Id)}} / {{getCategoryName(record.category2Id)}}</span>
        </template>
        <template v-slot:action="{ text, record }">
          <a-space size="small">
            <router-link :to="'/admin/doc?ebookId=' + record.id">
              <a-button type="primary">
                文档管理
              </a-button>
            </router-link>
            <a-button type="primary" @click="edit(record)">
              编辑
            </a-button>
            <a-popconfirm
                title="删除后不可恢复，确认删除？"
                ok-text="是"
                cancel-text="否"
                @confirm="handleDelete(record.id)"
            >
              <a-button type="danger">
                删除
              </a-button>
            </a-popconfirm>
          </a-space>
        </template>
      </a-table>
    </a-layout-content>
  </a-layout>

  <a-modal
    title="电子书表单"
    v-model:visible="modalVisible"
    :confirm-loading="modalLoading"
    @ok="handleModalOk"
  >
    <p>
      <a-form :model="ebook" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }">
        <a-form-item label="封面">
          <a-input v-model:value="ebook.cover" />
        </a-form-item>
        <a-form-item label="名称">
          <a-input v-model:value="ebook.name" />
        </a-form-item>
        <a-form-item label="分类">
          <a-cascader
              v-model:value="categoryIds"
              :field-names="{ label: 'name', value: 'id', children: 'children' }"
              :options="level1"
          />
        </a-form-item>
        <a-form-item label="描述">
          <a-input v-model:value="ebook.description" type="textarea" />
        </a-form-item>
      </a-form>
    </p>
  </a-modal>

</template>

<script lang="ts">
import { defineComponent, onMounted, ref } from 'vue';
import axios from 'axios';
import {message} from 'ant-design-vue';
import {Tool} from "@/util/tool";

export default defineComponent({
  name: 'AdminEbook',
  setup() {
    const param = ref();
    param.value={};
    const ebooks = ref();
    const pagination = ref({
      current: 1,
      pageSize: 4,
      total: 0
    });
    const loading = ref(false);

    const columns = [
      {
        title: '封面',
        dataIndex: 'cover',
        slots: { customRender: 'cover' }
      },
      {
        title: '名称',
        dataIndex: 'name'
      },
      {
        title: '分类',
        slots: {customRender: 'category'}
      },
      {
        title: '文档数',
        dataIndex: 'docCount'
      },
      {
        title: '阅读数',
        dataIndex: 'viewCount'
      },
      {
        title: '点赞数',
        dataIndex: 'voteCount'
      },
      {
        title: 'Action',
        key: 'action',
        slots: { customRender: 'action' }
      }
    ];

    /**
     * 数据查询
     **/
    const handleQuery = (params: any) => {
      loading.value = true;
      //如果不清空现有的数据，则编辑保存重新加载后，再点击编辑，则列表显示的还是编辑前的数据
      ebook.value = [];
      axios.get("/ebook/list",{
        params:{
          page: params.page,
          size: params.size,
          name: param.value.name
        }
      }).then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success){
          ebooks.value = data.content.list;
          // 重置分页按钮
          pagination.value.current = params.page;
          pagination.value.total = data.content.total;
        }else{
          message.error(data.message);
        }

      });
    };

    /**
     * 表格点击页码时触发
     */
    const handleTableChange = (pagination: any) => {
      console.log("看看自带的分页参数都有啥：" + pagination);
      handleQuery({
        page: pagination.current,
        size: pagination.pageSize
      });
    };

    //------------- 表单 ------------
    const categoryIds = ref();
    const ebook = ref();
    const modalVisible = ref(false);
    const modalLoading = ref(false);
    const handleModalOk = () => {
      modalLoading.value = true;
      ebook.value.category1Id = categoryIds.value[0];
      ebook.value.category2Id = categoryIds.value[1];

      axios.post("/ebook/save",ebook.value).then((response) => {
        //后端只要有返回就取消loading效果
        modalLoading.value = false;
        const data=response.data;
        if (data.success){
          modalVisible.value = false;

        //  重新加载列表
          handleQuery({
            page: pagination.value.current,
            size: pagination.value.pageSize,
          });
        }else{
          message.error(data.message);
        }
      });
    };

    //编辑
    const edit = (record: any)=>{
      modalVisible.value = true;
      ebook.value = Tool.copy(record);
      categoryIds.value = [ebook.value.category1Id,ebook.value.category2Id]
    };
    //新增
    const add = ()=>{
      modalVisible.value = true;
      ebook.value = {};
    }
    //删除
    const handleDelete = (id: number)=>{
      axios.delete("/ebook/delete/"+id).then((response) => {
        const data = response.data;
        if (data.success){
          handleQuery({
            page: pagination.value.current,
            size: pagination.value.pageSize,
          })
        }
      });
    };

    const level1 = ref();
    let categorys: any;
    /**
     * 查询所有分类
     */
    const handleQueryCategory = () => {
      loading.value = true;
      axios.get("/category/all").then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success){
          categorys = data.content;
          console.log("原始数组:",categorys.value)

          level1.value=[];
          level1.value = Tool.array2Tree(categorys,0);
          console.log("树形结构：",level1.value);

          //加载完分类后，再加载电子书，否则如果分类树加载很慢，则电子书渲染会报错
          handleQuery({
            page: 1,
            size: pagination.value.pageSize,
          });
        }else{
          message.error(data.message);
        }

      });
    };

    const getCategoryName = (cid: number) => {
      let result = "";
      categorys.forEach((item: any) => {
        if (item.id === cid){
        result = item.name;
      }
      });
      return result;
  };

    onMounted(()=>{
      handleQueryCategory();

    })

    return {
      param,
      ebooks,
      pagination,
      columns,
      loading,
      handleTableChange,
      getCategoryName,

      edit,
      add,

      ebook,
      modalVisible,
      modalLoading,
      handleModalOk,
      categoryIds,
      level1
    }
  }
});
</script>

<style scoped>
img {
  width: 50px;
  height: 50px;
}
</style>
